ORIGINAL RESEARCH
Identifying the Environmental Factors that Determine the Agar Content of Seaweed Gracilaria verrucosa in Acid Sulfate Soil-Affected Brackishwater Ponds
 
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1
Research Center for Fisheries, National Research and Innovation Agency; Jl. Raya Bogor KM. 47 Cibinong, Bogor 16911, West Java, Indonesia
 
2
Research Center for Conservation of Marine and Inland Water Resources, National Research and Innovation Agency; Jl. Raya Bogor KM. 47 Cibinong, Bogor 16911, West Java, Indonesia
 
3
Research Institute for Coastal Aquaculture and Fisheries Extension; Jl. Makmur Dg. Sitakka 129 Turikale, Maros 90512, South Sulawesi, Indonesia
 
 
Submission date: 2023-09-05
 
 
Final revision date: 2023-12-07
 
 
Acceptance date: 2024-01-08
 
 
Online publication date: 2024-05-10
 
 
Corresponding author
Akhmad Mustafa   

Research Center for Fisheries, National Research and Innovation Agency, Jl. Raya Bogor KM. 47 Cibinong,, 16911, Bogor, Indonesia
 
 
 
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ABSTRACT
This study was carried out with the aim to identify the characteristics and determine the direct or indirect effect of soil and water quality on the agar content of seaweed Gracilaria verrucosa in acid sulfate soil (ASS)-affected brackishwater ponds in South Sulawesi Province, Indonesia. The study was conducted in ponds of North Luwu and Sinjai Regencies. The soil quality is defined as the independent or exogenous variable; the water quality as an intermediate, dependent, or endogenous variable; as well as the agar content of seaweed as a dependent or endogenous variable. The influence of environmental factors was identified through path analysis applications. In general, the water quality can support the culture of seaweed in ponds. The results of the research showed that of the 17 soil quality variables analyzed, 2 variables were found, namely Fe content and pHKCl which influenced the agar content of seaweed. Another result was that of the 9 water quality variables, and 2 variables were also found, namely salinity and NO3 - content which influenced the agar content of seaweed. Soil Fe can reduce the agar content while soil pHKCl, salinity, and water NO3 - content can increase the agar content of seaweed in ASS ponds in South Sulawesi.
eISSN:2083-5906
ISSN:1230-1485
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